Currently, ORCID is optional, not mandatory. It should be emphasized that most publishers (including Elsevier, Wiley, Nature, Thomsen Reuters) now require all researchers associated with their publications to use an ORCID iD.
If an article is published without providing an ORCID iD, how can it be added?
ORCID stands for Open Researcher and Contributor ID. The ORCID iD is a unique and persistent academic identity for contributors, researchers can be distinguished from other researchers, and all relevant research activities of the authors will be recorded. To add an ORCID iD, you need to log into each author's account and then associate it in the account information modification section

(0) Thank | 维尔娜菲茨杰拉德

ORCID is an open researcher and contributor ID (Researcher and Contributor ID), and it is a non-profit organization. The ORCID ID is the unique and persistent academic identity of the contributor, which distinguishes authors from other researchers and records all relevant research activities of the author. Researchers can register for an ORCID ID for free at https://orcid.org/signin by filling in their name, email, and setting a password

(0) Thank | 维尔娜菲茨杰拉德

Is it necessary to provide ORCID IDs for each author when submitting a manuscript?

(0) Thank | 北国博达

What is ORCID iD? How can I register?

(0) Thank | 破戒阳平

Hesitating to move forward, but being at this juncture, it is not easy to push forward anymore. Scoring over 4 points, also considered satisfactory

(0) Thank | 凌霄高洁

Can we reach 3 points next year? Let's discuss it

(0) Thank | 凌霄高洁